How to Determine What Kind Of Watertank Is Most Optimal For Melbourne

There aren’t many consolations to a rainy day– cosy lounge time, soothing sounds of water on the roof, and perhaps a rainbow or a puddle-splash afterwards. But you can add one more by attaching a water tank to capture a portion of that downpour: it’ll diminish your environmental footprint by minimizing your demand on mains water and the quantity of stormwater runoff into rivers and oceans, and can also cut your water bill in the long-term.

Rainwater tanks are no longer just huge, round and bad-looking; they are available in all shapes and sizes that can make efficient use of tiny or tricky urban spaces.

Water for outdoor or indoor application?

The absolute most important issue to consider before you acquire and install a rainwater tank is how you wish to use the water.

Utilizing the water outdoors– for watering the garden and washing the car, for example– is the fastest way to start, as you most likely just need the supplier to set up the rainwater tank, as opposed to a licensed plumber. And it will immediately cut your consumption of mains water.

Save even more by sending the rain water to your toilet, washing machine or water system, but you’ll require a licensed plumber to connect the tank to your mains supply.

What size rainwater tank do I need to have?

The volume you choose will hinge on the size and shape of your household and garden. Round, squat tanks fit effectively under a deck, while slimline tanks agree with narrow spaces. An underfloor tank or bladder storage system is a good out-of-sight space saver, however, is more expensive.

Your roof area and the annual rainfall in your location will also need to be considered. To help determine the size and shape that’s appropriate for you, sellers often provide calculators on their internet sites, or your water authority may have the opportunity to help.

What else do I need to understand before investing in a water tank?


Water tanks normally can be found in the following materials:

Metal tanks are created from corrugated or flat rolled metal, which can be galvanised or coated. They often feature a plastic inner lining (Aquaplate) that will enhance the life of the tank and protect the water quality.

Polyethylene (plastic) tanks are popular as they are reasonably cheap and durable. Because rust isn’t an issue, they are a good option for people living near the coast. Other synthetic materials, like PVC and geotextile, are utilized for bladder storage. Bladders are useful for water storage below a deck or floor; while their material is tough, it’s not intended for outdoor installation.

Fibreglass tanks are rust and chemical-resistant and manufactured to withstand extreme temps. They’re not the cheapest solution, and more suitable for above-ground installation, while all other styles can also be installed below ground.

Concrete tanks, often used for agricultural and industrial intentions, won’t rust, burn, melt or blow away. They may be bought ready-made, or custom made onsite.


Ask your local council and water supplier which rules and regulations apply in your location. You may need to provide a development or building application, and there may be regulations around drinking rainwater or mosquito breeding prevention, along with restrictions on the tank’s placement, colour, height and labelling or noise regulations for a pump.

Are you remodeling, building new or retrofitting?

If you are refurbishing or building, rather than retrofitting, you may have to incorporate energy and water-efficient attributes in your plans to fulfill new legislative requirements.

Extra expenses

When acquiring quotes, inquire if there are any further costs for delivery and installation; extra materials (such as pipes, fittings and taps); optional extras (such as a first-flush or backflow-prevention device); a pump (unless you can utilize gravity for water pressure); and a stand (unless you would like to put it on the ground or below it, by which case you’ll need to look into the cost of special ground prep or excavation).

If you want to connect the tank to your mains water system, consider the cost of a licensed plumber, and charges for any extra work that needs to get done to your roof and/or guttering.

Can you receive a water tanks perth tank rebate?

Talk to your local water or government authority to see if you’re entitled to a cash rebate or bill reduction– the answer may hinge on the size of the rainwater tank and whether it’s connected to a toilet and/or washing machine.


Rainwater tanks can fluctuate from around $700 to $2000, beginning with a small, freestanding model without pump or extras, to large, custom-built models. Costs vary depending upon the size, material, finish and strength of the tank.

Author: willygerber7302

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